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Finding the Fourth Proportional to 578,081.20, 867,510.60 and 262,375.60

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Solution

The fourth proportional to 578,081.20, 867,510.60 and 262,375.60 is: 393,739.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,081.20 : 867,510.60 = 262,375.60 : x
  2. Step 2: Convert to fraction form
    578,081.20/867,510.60 = 262,375.60/x
  3. Step 3: Cross multiply
    578,081.20x = 867,510.60 × 262,375.60
  4. Step 4: Simplify right side
    578,081.20x = 227,613,614,181.36
  5. Step 5: Solve for x
    x = 227,613,614,181.36/578,081.20
  6. Step 6: Final answer
    x = 393,739.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.